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Found 7 results

  1. hello people of the internet. im strongly thinking about changing my k302 carbs out for either my old pair of original k37 carbs or the pz28 I have laying around. Since the K302 is running WAY to rich, and I have tried rejeting, rebuilding, new spark plugs, hotter spark plugs, timing, ignition you name it, but they just won't run "normal" and always foul up the spark plugs. So those got to go, but I wanted to know, if you guys recommend either the pz28 or the k37 pairs of carbs, when it comes to the size (24mm vs 28mm), since I have read that many people have stated, that 26mm should work best for these old SV engines, and I have read that many have been using the pz28 carbs. I haven't been able to find any information about the k37 carbs, when it comes to needle hight or jet size and all that. But also about, with size carb will work best for my old Dnepr, when comparing these 2 against each other. And if I go with the K37 carbs, should I use the original needle jet with the holes in the top of it, the one that the needles slides up and down in, or the pz28 needle jet, since the k37 is around 5mm longer (from the treads and up) compared to the pz28´s needle jets. The last thing, the k37´s jets say 150, but they look similarly sized to the pz28´s .92 jets, how big is this jet actually? since I can't find any information about, how big these old actually are, compared to keihin or Mikuni jets. the carbs: PZ28D (28mm) (PL10 stamped on the front?) main jet: .92 (properly need a 95 or 98 jet to work correctly) idle jet: ? (a screw with a taper in the end) ---------------------------------------------- K-37 (24mm) main jet: 150 idle jet: 04
  2. hey guys, I have had some troubles with my carburetors the last couple of months. When ever I have been out and riding for more then lets say 15-20min. the spark plugs always turns sooty, like totally charcoal black, I have changed the main jet from a 200 to a 150, but the soot still occurs on the spark plugs on both cylinders, they are dry and totally black. I have tried with the needle bottomed out, but this only gives me around 5 more minuts or normal driving. I just feel like, no matter what I do, I just can't get my old k750 to run well again. Do I just have to buy a whole new sets of carbs, or is there anything I can do with my other 2 sets of carbs, to get this old lady up and running well again, or is it something completely different that I have overlooked? what I have tried until now, to fix the issue: - change the jet to a smaller size (the smallest i got) - cleaned the air filter. - no air filter - cleaned the carbs and jets. - installed new floats and float needle. - installed a gas filter. - tried new spark plugs. - changed the gas hose to the carbs. - tried changing the carbs for either of the 2 other Pairs I got, but I couldn't get it to run at all then. (useful info if needed) Bike: KMZ K750 1963 (sidevalve, 6v) installed at the moment: spark plugs: NGK BP7HS K-302 main jet: 150 idle jet: 04 ? needle hight: second from the top. mixture screw: 1.5 turns out. ---------------my other 2 pairs of carbs:--------------- PZ28D (28mm) (PL10 stamped on the front?) main jet: 92 needle hight: - slide hole 2 (top hole) - needle hole 2 ( second hole from the top) --------------------------------------------------- K-37 (24mm) main jet: 150 (no needle at the moment, just slide, I used the needle from the PZ28D)
  3. Pete Swede

    K37 24mm

    From the album: Everything else...

    Original carburetors for M72
  4. Pete Swede

    Keihin 8mm Jet

    From the album: Everything else...

  5. I was browsing the net as usual for info about Nikita (M72 1953), and as usual I ended up at GoodKarma reading all the goodies there... I have put new PZ28D:s on Nickie and I remembered that I have read about re-jetting PZ:s for OHV and SV... I found this gold nugget... Link to the jets in the text... Of course I was interested but I don't know much about jet codes, and in the text it's mm. So I tried to find a cross reference chart to understand what codes I should look for. Everything I found was in inches... So I took one and translated inch to mm:s. Hope it helps anyone else also...
  6. From the album: Everything else...

  7. Pete Swede

    PZ28-K37 Jets

    From the album: Everything else...

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